half-brackets in the Supplemental Punctuation block

Hi,

I am excited to see the half-bracket symbols (U+2E22 -> U+2E25) in
Unicode. I've been waiting for them. I assume that they're meant for use
cases such as:

  * in certain Japanese dictionaries to indicate pitch accent (U+2E22
    and U+2E23 would surround the high-register "mora")
  * for alternate quoting, such as Jeffrey Friedl's usage in his
    "Mastering Regular Expressions" book to denote the beginning
    (U+2E22) and end (U+2E25) of regexes

In both these two use cases that I'm aware of, the symbols are
zero-width, or casually indistinguishable from zero-width. Is there a
place in the standard to indicate that this is the recommended way for
fonts to implement these symbols?

Stephan
Received on Wed Jun 06 2012 - 18:13:23 CDT